Pulsed Field Ablation for Early Atrial Fibrillation Using a Balloon
Official title: PULSed Field Ablation for Atrial Fibrillation Using a Balloon for Early Intervention - Study - The "PULSE - Study"
Run by Asklepios proresearch · NCT07621003 · Data updated 2026-11-12
This study tests whether first-line pulsed field ablation with a balloon is better than usual care for adults with early atrial fibrillation who have not had ablation before.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 264 (estimated) |
| Sponsor | Asklepios proresearch Industry-sponsored |
| Locations | 10 sites (Bad Oeynhausen and 9 other locations) |
| Status | Recruiting |
| Started | August 19, 2026 |
| Main results expected | March 31, 2030 |
| Study ends | March 31, 2031 |
| Registry record updated | October 6, 2026 |
| Trial ID | NCT07621003 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults (≥18) with early-stage paroxysmal or persistent AF diagnosed within the last 36 months who have not previously had AF ablation and meet the study’s inclusion criteria.
✕Probably not a fit
Patients unlikely to benefit include those with longer-standing AF (>3 years), prior AF ablation, or contraindications to ablation or anticoagulation therapies.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is a prospective, multicenter, randomized trial comparing first-line pulsed field ablation (PFA) using a balloon to standard medical therapy in adults with symptomatic or asymptomatic early-stage paroxysmal or persistent AF (<3 years). The study uses an open-label design with blinded end-points and follows participants for 12 months. Eligible patients have no prior AF ablation and meet specific rhythm and medical criteria; key exclusions include longer-standing AF and certain comorbidities. PFA aims to selectively ablate myocardial tissue while minimizing collateral injury, potentially improving safety and efficacy compared with traditional thermal ablation or medical therapy. The trial is sponsored by Asklepios proresearch with collaborators and spans several European centers.
Why it matters
Potential benefit: If successful, patients may experience better rhythm control and potentially fewer AF-related symptoms and health care needs compared with usual care.
How similar studies have gone: Previous studies in early rhythm-control and balloon-based ablation have shown benefits of ablation over pharmacologic therapy in similar AF populations, supporting further investigation of PFA in this setting.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Adults (≥18 years) with symptomatic or asymptomatic, paroxysmal or persistent atrial fibrillation * First diagnosis of AF within the last 36 months * At least one documented episode of AF on ECG, Holter monitoring, or eligible Smart Watch Device * No prior catheter ablation for AF Exclusion Criteria: * Persistent AF \>3 years or longstanding persistent AF * Previous AF-Ablation * Ongoing continuous AAD therapy with Amiodarone at baseline * History of failed continuous AAD therapy with \> 1 agent. Exceptions are Beta blocker, Verapamil or "pill in the pocket"-therapy * Left Atrial Volume Index (LAVI) \> 50mL/m2 * Severe mitral regurgitation * Contraindications to anticoagulation therapy * Severe pulmonary or renal disease * Pregnancy, active cancer disease * Any condition or disease which is contraindication for AF ablation within 21 days or Anti-Arrhythmic Drug (AAD)
Where it's running
-
Arian Sultan
Hamburg, Germany Recruiting -
Lukas Krankenhaus Neuss
Neuss, Germany Recruiting -
HZD Bad Oeynhausen
Bad Oeynhausen, Germany Not yet recruiting -
Uniklinik Köln
Cologne, Germany Not yet recruiting -
Uniklinik Düsseldorf
Düsseldorf, Germany Not yet recruiting -
CCB Frankfurt
Frankfurt, Germany Not yet recruiting
Show 4 more locations
-
Uniklinik Gießen
Giessen, Germany Not yet recruiting -
Marien Hospital Herne
Herne, Germany Not yet recruiting -
Leipzig Herzzentrum HZL
Leipzig, Germany Not yet recruiting -
Klinikum Nürnberg
Nuremberg, Germany Not yet recruiting
Study contacts
- Principal investigator: Arian Sultan, MD — Asklepios Klinik St. Georg
- Study coordinator: Kathrin Heitmann
- Email: ka.heitmann@asklepios.com
- Phone: +49 40 181885
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
-
AI-based tools to help diagnose, treat and predict stroke outcomes across multiple hospitals
This study tests AI-powered tools on real-world stroke patients to see if they can improve pre-hospital triage, diagnosis, and outcome prediction while data stay securely within each hospital.
-
Left-atrial Fibrosis in Persistent Atrial Fibrillation and Its Comorbidities
This study tests how comorbid conditions like sleep apnea and primary aldosteronism relate to left-atrial fibrosis and AF recurrence in patients undergoing ablation.
-
Dual Energy ablation with SmartTouch SF catheter in persistent atrial fibrillation
This study tests a pulsed field and radiofrequency ablation system to treat persistent atrial fibrillation in adults who have not responded well to prior medications.
-
Identifying AF patients who may need more than standard ablation using Volta AF-Xplorer II
This trial tests whether AI-identified dispersion areas during AF ablation can predict recurrence after a standard pulmonary vein isolation in patients with persistent AF.
-
4D intracardiac echocardiography to guide left atrial appendage occlusion procedures
A new 4D ICE catheter is being tested alongside standard imaging to see if it can safely guide left atrial appendage occlusion procedures for adults with atrial fibrillation.
-
Thoracoscopic vs Catheter Ablation as the First Rhythm Control in Atrial Fibrillation with a Large Left Atrium
This trial tests whether thoracoscopic surgical ablation is better at keeping atrial fibrillation under control than catheter ablation in people with persistent AF and a large left atrium who have not had an ablation before.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.